ZDM - Positive-Displacement Flow Meter

Brand: KOBOLD Instruments, Inc

The KOBOLD ZDM Series positive-displacement flow meter is also known as a radial or spherical gear meter. Available in either stainless steel or cast iron, this metal flow meter offers a state-of-the-art solution.

Capable of performing at pressures up to 6500 PSI and temperatures from -40 °F to 410 °F, this positive-displacement flow meter is rugged enough to operate with very demanding requirements.

Add to this the ability to precisely meter lubricating liquids with viscosity ranges of 0.3 cSt to 100,000 cSt, and the range of possible applications becomes truly enormous.

All liquids that can be pumped and have known lubrication properties can be measured with the the ZDM, including, for example: paraffin, kerosene, diesel, Skydrol®, mineral oils, hydraulic oils, inks, dyes, paints, greases, polyurethane, glues, pastes, creams, resins, waxes and many others.
  • Can Detect Flow Direction
  • Handles a Variety of Lubricating Liquids


Measuring Range

  • 0.0005-0.5 to 0.4-138 GPM


  • 3/8” to 2” NPT Threads


  • Cast Iron
  • Stainless Steel

Maximum Pressure

  • 4500/6500 psig

Temperature Range

  • -40° F to 248° F


  • Pulse Frequency

Media Category

  • Liquid


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